[427sharpe]

As Mick stated, I use the milling machine. Put in a 3/4" roughing bit and feed it to half the diameter and you have a perfect joint for welding IF you have the angle right. I usually measure the set up angle as it will be on the car, than when I mount the vise into the mill bed I use a protractor to set the angle. It gets tougher when you have a compound angle, but the principles are the same except you must use a sine vise to get the compound correct. I have found titanium coated bits as large as 3" that fit my mill (R8 tooling) and I use them on everything. If shoppong for a mill, make sure you get one w/ R8 tooling...it is the spec used by Bridgeport (the main industrial brand) so there are tons of mills and holders available. If true R8, it will also have a 7/16 drawbar...I have seen some sell stuff using a metric thread, which means you would have to buy their bar or make your own.